Electric stop-motion mechanism for looms.



PATENTED DEC. 26, 1905v J. B. WHITNEY. I ELECTRIC STOP MOTION MECHANISMFOR LOOMS.

APPLICATION FILED FEB. 28. 1905.

, INVENTO BY I ATTORNEYS WITNESSES:

IINITED STATES JOSEPH B. WHITNEY, OF BROOKLYN, NEW YORK.

ELECTRIC STOP-MOTION IVIECHANISIVI FOR LOOMS.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed February 28, 1905. Serial No. 247,709.

To (0Z7, whom it neay concern:

Be it known that I, Josnrn B. WHITNEY, a citizen of the United States,residing in Brooklyn, county of Kings, and State of New York, haveinvented certain new and useful Improvements in Electric Stop-MotionMechanism for Looms; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersof reference marked thereon, which form a part of this specification.

My invention relates to electric stop-motions for textile machinery, andparticularly to stop-motions of this class in which the electricterminals to be bridged by the fallers or pjilrcuit-closers are tautwires, rods, or the The invention has for its object to provide meansfor maintaining a constant relation between each two terminals at alltimes as against the influence of vibration in the loom not only tothrow the parts out of adjustment, but to induce vibration in theterminals.

My invention will be found fully illustrated in the accompanyingdrawings, wherein Figure 1 is a top plan view of so much of an electricstop-motion for looms as is necessary to illustrate my inventionto wit,the fallers, the terminals, the means for maintaining the terminalstaut, and the means for maintaining them in constant relation to eachother; and Fig. 2 is a perspective view showing the terminals and themeans formaintaining them in constant relation to each other.

In the drawings, a is the warp; b and c, the two sets of terminals; (Z,pivoted fallers controlling the warp and each adapted, when its threadbreaks, to close the circuit, being for this purpose pivoted on one ofthe terminals 1) and adapted to drop into contact with a correspondingterminal 0; e, clamping means at each end of the two sets of terminalsand maintaining the latter taut; f, the side members of a frame againstwhich the clamping means abut g, stay-rods, also forming a part of saidframe and spacing members f, and h rollers j ournaled in the members fand serving to partly sustain the warp. i is a brace for supporting theset of terminals on which the fallers are pivoted, thereby keeping saidterminals from sagging under the weight of the fallers. These severalparts are fully described in my application for United States LettersPatent, Serial No. 163,727, and for the purpose of the present inventionrequire no further description than the foregoing.

Coming now to my invention, 1' is a strip of suitable material havingappreciable rigidity, which is inserted between the tWo sets ofterminals b and c. In the adaptation shown it is a strip of induratedfiber, being thus insulative and of appreciable thickness, so that withthe Wires or other devices forming the terminals bearing squarelyagainst its top and bottom edges under tension it will maintainitselfina vertical plane. Said strip is notched, as at k, to receive theseveral wires, the said notches being approximately of the same gage asthe wires.

As just particularly described, the wires forming the terminals will bythis device be maintained in constant and positive relation to eachother and prevented from being affected by any of'the disturbinginfluences growing out of the vibration of the loom.

I do not wish to be limited to the precise 1gonstruction herein shownand described;

What I claim, and desire to secure by Letters Patent of the UnitedStates, is

1. In an electric stop-motion mechanism for textile machinery, thecombination of two sets of terminals representing diiferent poles in thecircuit, said terminals being taut attenuated devices, circuit-closersmovable to bridge terminals of both sets, and detached means, interposedbetween said sets of terminals, intermediate their ends, for maintainingthe terminals of one set in fixed relation to those of the other,substantially as described.

2. In an electric stop-motion mechanism for textile machinery, thecombination of two sets of terminals representing difi erent poles inthe circuit, said terminals being taut attenuated devices,circuit-closers movable to bridge terminals of both sets, and a detachedinsulative strip interposed between said sets of terminals intermediatetheir ends and maintaining them in fixed relation to each other,substantially as described.

3. In an electric stop-motion mechanism for textile machinery, thecombination of two sets of terminals representing different poles in thecircuit, said terminals being taut attenuated devices, circuit-closersmovable IIO to bridge terminals of both sets, and a de- In testimonythat I claim the foregoing 1 tached insulative strip interposed betweenhave hereunto set my hand this 15th day of said sets of terminalsintermediate their ends February, 1905. and maintaining them in fixedrelation to 5 each other, said strip being notched at its edgesWitnesses:

and receiving said terminals in its notches, JOHN W. STEWARD,substantially as described. WM. D. BELL.

JOSEPH B. WHITNEY.

